Definitions | x:A. B(x), t T, kindtype(i;k), vartype(i;x), Msg, Send(i), kindcase(k; a.f(a); l,t.g(l;t) ), if b t else f fi, isrcv(k), es-M(es), lnk(k), tag(k), es-V(es), act(k), es-T(es), es-Send(es), 1of(t), 2of(t),  x. t(x),  x,y. t(x;y), isl(x), outl(x), outr(x), true , false , islocal(k),  b, ES, Knd, P & Q, P  Q, x(s), x(s1,s2) |